Paper-making machine



Feb, '4, 1930, F. A. PEscHL PAPER mxme mcamn Filed Dec. 24, 1927 4Sheets-Sheet TOPAZ'YS,

Feb. 4, 1930.

F. A. PESCHL PAPER MAKING MACHINE Filed Dec 24. 1927 4 Sheets-Sheet 2ATTO/Q/YZXC Q Feb. 4, 1930. I APESCHL 1,745,687

PAPER MAKING MACHINE Filed Dec. 2 1927 4 Sheets-Sheet s Feb. 4, 1930. F.A. PESCHL PAIER MAKING MACHINE 4 Sheets-Sheet Filed Dec. 24, 1927ATTOQ/Yffl Patented Feb. 4, 1930 UNITED STATES PATENT OFFICEPAPER-MAKING MACHINE Application filed December 24, 1927. Serial No.242,308.

7 This invention relates to paper making machines, and is concerned moreparticularly with the formation and manipulation of the so-called leadstrip, which is a strip formed on one edge of the paper web tofacilitate the initial feed of the web through the machine when themachine is started up, or to reestablish the feed of the web in theevent of the accidental breakage or parting of the same.

In the U. S. Patent No. 1,634,885 granted to me on the 5th day of July,1927, there is disclosed a mechanism as an attachment for paper makingmachines, operable in the event a of an abnormality or defect in, or theaccidental parting or breaking of the paper web at any point in themachine, to bring into action an air jet to cause a break in said web ata point in the machine preceding the ac- 1-1! cidental breaking point,so as thereby to interrupt and prevent the further feed of the web intothe machine until the waste paper or so-called broke has been removedand the lead of the paper web through the machine has beenreestablished. Such reestablishment of the feed of the web is usuallyeffected by forming on the paper web, a lead strip and tendering thislead strip through 'the machine, and after'the strip is feeding 1properly, the relatively narrow strip is widened out to the full widthof the web.

The formation of such lead strip may be effected in various ways, suchas by lncising the sheet at one edge with a cutter or knife,

F5 or when the lead strip is formed at a point in the web where thestock is soft, as where the web is still on the forming wire or-betweenthe forming wire and first press, the incising of the web may beeffected by a water jet or an air jet, directed downwardly on the movingweb, which air jet by being moved transversely across the machine willact to widen out the lead strip to the full width of the paper web.

It has been found in the practical operation of the machines that theaccidental parting or breaking of the web takes place 'in most cases inthe drier section, and considerable difiiculty has been encountered on 5the part of the workmen in entering the lead strip and starting itstravel' through the presses, which difliculty is more pronounced inconnection with the third or reversed press where the paper has to makea sharp reverse turn before entering the press.

The present invention aims to overcome this difiiculty and to relievethe workmen entirely of the necessity of the manual handling of the leadstrip in entering the same in the presses, or in other parts of themachine preceding the pointof the accidental break; and the inventionconsists of means adapted to be brought into action by the accidentalparting of the web, and operating to form a lead strip on the paper web,before the automatically operating mechanism has broken the web entirelyacross, the result being that the portion of the web constituting thelead strip, will continue uninterruptedly through that portion of themachine which precedes the ppint of accidental break, so that it willnot necessary for the attendant, as heretofore, to manually start thelead strip, for instance, throu h the presses, in the event that the webaccidentally breaks in the driers or at a point beyond.

In its more specific embodiment, the invention in carrying out thisobject, involves a water jet located in the machine adjacent andpreceding the point where the air jet starts the breaking of the web,and directed so as to discharge normally beyond the edge of the web,which water jet is movable so that it may be adjusted to discharge ontothe web, and means are provided operated automatically when the air jetis turned on to break the web, to move the water jet inwardly so that itwill impinge on the web adjacent its edge, the result being that thewater jet will form an incision in the web which will prevent thebreakstarted by the air jet, from developin entirely across andcompletely severing t e web.

In the specification to follow the inventon will be described in detail,and the novel features thereof will be set forth in the appended claims.

Referring to the drawings Fig. 1 is a diagrammatic view showing in sideelevation such parts of a paper making machine as will be necessary foran understanding of the invention, the same having the inventionembodied therein. 'Fig. 2 1s a slmilar view in plan.

Fig. 3 is a cross sectional elevation on the Fig. 5 is an elevation ofthe water jet noz zle for forming the lead strip, and the 00- operatingwater squirt employed for widenin the lead strip.

ig. 6 is a plan view of a paper web which has accidentally broken in thedrier section of the machine, showing a lead strip formed thereon andwidened out to the full width of the web.

Fig. 7 is a plan view of a modified form of the mechanism forcontrolling the action of the water jet by which the lead strip isformed.

Fig. 8 is a side elevation of the same.

Fig. 9 is a cross section on the line 99 of Fig. I as viewed in thedirection of the arrow on said figure.

In the accompanying drawings Referring to Figs. 1 and 2, there areillustrated in a paper making machine, the forming wire 1, couch roll 2atthe delivery end of the forming wire, the first press 3 to which thepaper Web 4 passes from the forming wire, the second and third presses 5and 6 to which the web passes in succession from the first press, anddrier cylinders 7 receiving the web from the third press, but three ofthe drier cylinders being shown.

There is diagrammatically shown associated with these parts of themachine, the

mechanism A of my Patent N 0. 1,634,885 hereinbei'ore referred to andadapted to cause a break in the paper web between the couch roll andfirst press felt and thereby interrupt the feed of the web upon theaccidental parting of the web at a point beyond, the said mechanismcomprising an air jet nozzle or pipe 8 arrangedto deliver its jet ontothe central portion of the soft web at a point between the couch rolland first press felt, so as to start a break in the web, a valve 9 tocontrol said jet, and operated by a solenoid core and coil 10 in a powercircuit 11 from which, branch conductors 12 lead to contactors 13located at difl'erent points in the machine, the said contactors beingadapted to be operated to close the circuits upon a break of the paperweb, occurring at any of said points, and when so operated, opening thevalve 9 and permittinga jet of air to. impinge on the paper web, all asdescribed in detail in said patent, to which reference may be had for afuller description than is here given.

In the operation of said mechanism, the closure of the power circuit byany one of the contactors on the breakage of the web, will open thevalve 9, and air under pressure issuing from the nozzle 8 in the form ofa et will impinge upon the soft Web and will rupture the same as shownat 14 in Fig. 2, and the rupture quickly spreading transversely willsever the web throughout its width, whereupon the web instead of passingforwardly into the first press will pass down around the couch roll intoa save-all, whence it is returned to the stock box. When after suchaction the broke is cleared away at the point where the accidentalparting of the web occurred, and the machine is ready to resumeoperations, a lead strip is formed on the paper web on the forming wireby means of a squirt nozzle as shown in Figs. 3 and 4, in

the form of a depending pipe or nozzle 15 connected to a length of hosel6 seated and movable in a fixed transversely extending horizontal guidetrough 17 supported on the upper ends of standards 18 extending upwardlyfrom the frame of the machine. The hose being supplied with water, thelatter issues as a jet from the nozzle 15, and by pushing or pullingendwise on the hose, the attendant can position the nozzle at thedesired point in the width of the paper web. In forming the lead strip,under such previous practice, the attendant drew the nozzle from itsinactive position as shown in Fig. 3, to the position shown in saidfigure by dotted lines, thereby causing the jet to strike the web ashort distance from its edge. The nozzle was held in this position untilthe lead strip formed by the incising effect of the jet, was feedingthrough the machine, whereupon, the nozzle was pushed back to its formerposition, thereby widening the lead strip to the full width of the web.

The present invention is shown, in the particular embodiment of the sameillustrated by way of example, as applied in connection with themechanism above described, and comprises a water jet nozzle 19 dependingfrom a horizontal water supply pipe 20 and connected therewith by ajointed coupling 21 as best shown in Fig. 3, so that the nozzle can beswung from its inactive full line position shownin said figure, inwardlyto its active dotted line position, the nozzle when in its inactiveposition discharging into a fixed deing of the valve 9 controlling theflow of air to the air jet nozzle 8, which means in the present form ofthe invention isin the form of an air cylinder 23 and a piston 24therein having its piston rod 25 jointed to a link 26 clipped to thenozzle 19, the cylinder being supplied with air from the air supply pipeby which the jet 8 is supplied, as by a branch 27 as best shown in Fig.1.

Due to the form and arrangement of the parts described, when, with thenozzle in the position shown in full lines and discharging into thespout, the valve 9 is opened upon the accidental breakage of the paperweb, and the air jet from nozzle 8 starts the break of the web the airflowing through pipe 27 will move the piston 24 in its cylinder, and thewater jet nozzle 19 will be swung inwardly to active position, therebyimpinging its jet on the paper web near its edge and forming the leadstrip thereon.

As a result of the impingement of the water jet from nozzle 19 on thepaper web at a point on the forming wire a short distance preceding thepoint where the air jet from nozzle 8 impinges, the cut made in the webby the water jet will prevent the rupture made by the air jet fromdeveloping at the front side of the web beyond said out and thus willprevent the complete severance of the web. Consequently the lead stripwill be maintained on the web and will be carried with it into thepresses, so that there will be no necessity for the manual handling ofthe strip by the attendants as heretofore practised in entering the leadstrip in the presses.

The lead strip being thus automatically started at the instant of therupture of the web by the air jet. it remains for the operator to widenout the strip to the full width of the web, when the travel of the leadstrip through the machine has been established after the removal of thebroke at the point where the accidental parting of the web took place.In the present instance this widening of the lead strip is effected bythe water squirt nozzle 15, which, when the lead strip is to be widenedout, is drawn to the front by the attendant until the water squirt hitsthe cut defining the lead strip, whereupon the water squirt is pushedrearwardly across the paper web to its former position, therebycuttingthe same acrosson a line as at 28, which line. due to the travelof the web relative to the fixed point of impingement of the water jet,will extend obliquely to the web as shown in said figure. The lead stripby this operation will, as shown in Fig. 6, be widened out until ittakes in the entire width of the paper web, and being carried forward bythe lead strip, the reestablishment of the feed of the web will beeffected.

Means are provided, which, when the water squirt nozzle has been drawnforwardly by the attendant to effect a widening of the lead strip asdescribed, will act automatically to swing the water jet nozzle 19 toinactive position so that it will discharge into the deflecting spout,which means in the present case is in the form of a horizontal arm 29fixed to and extending forwardly from the nozzle 15 just below the guidetrough 17. This arm is adapted, when the nozzle 15 reaches a point wherethe squirt is coincident with the cut defining the lead strip, to engagea horizontal arm or lug 30 on the piston rod 25, 'and by such engagementthe piston rod will be pushed toward the front of its cylinder, and thewater jet nozzle 19 will be swung to its full line active position todischarge into the deflecting spout. It will be understood thereforethat by this action of the parts, the movements of the water squirtnozzle toward the front by the attendant, will automatically cut off theaction ofthe lead strip forming et.

The inner active position of the nozzle is determined by a fixed stop301; and its outer inactive position by a stop 302.

It will be understood that other means than those described may beemployed for swinging the water jet nozzle 19 inwardly to activeposition, such for instance as the means shown in Figs. 7, 8 and 9,wherein electrically operated mechanism, actuated by the power circuitcontrolling the valve 9 of the web rupturing mechanism, are illustratedto accomplish this result, instead of the pneumatic means shown in Figs.1 to 5.

On reference to Figs. 7, 8, and 9 it will be seen that the nozzle 19' isclipped to a horizontal'shaft 31 mounted to rock in bearings 32supported by a suitable frame 33 sustained by the machine framing at itsfront. A ratchet wheel 34 is supported on the shaft and is heldfrictionally engaged therewith to permit circumferential relativemovement thereon by being seated against a flange 35 on the shaft andheld frictionally thereagainst by a rubber block 36 compressed betweeninner and outer washers 37 and 38 splined on the shaft and confined bynuts 39 screwed on the shaft, the inner washer hearing against the sideof the ratchet wheel and holding the same frictionally against theflange 35. As a result of this form and construction of the parts, whilethe motion of the ratchet will be transmitted to the shaft, yet theshaft may be turned independently of the wheel, the purpose of whichwill presently appear.

The ratchet wheel is engaged by a ratchet dog 40 fixed to one end of alink 41 whose opposite end is pivoted to the upper end of an armature 42pivoted at its lower end to the frame 38. The armature is acted on by anelectromagnet 44 supported by the frame 33 and supplied with currentfrom the power circuit of the web rupturing mechanism hereinbeforedescribed, so that, on the closure of said circuit, upon the accidentalparting of the paper web, the electromagnet 44 will be energized andattracting the armature 42, the ratchet dog will be actuated and theratchet wheel turned, which action will swing the nozzle 19 to itsactive position to impinge its jet on the paper web. On the opening ofthe power circuit when the rupturing mechanism is reset as described inmy patent hereinbefore referred to, the armature will be caused by aweight 42 thereon to swing away from the magnet, and will thereby movethe ratchet dog idly over the teeth on the ratchet wheel for a new gripthereon.

It will be understood that the nozzle 19 in this form of the mechanism,is adapted to be swung to its inactive position by the movement of thewater squirt 15 toward the front as in the first instance described, thearm 29 on the squirt nozzle being adapted to engage a lug 30 carried bythe nozzle 19, when the squirt nozzle reaches a position where itssquirt will strike the cut defining the lead strip. Such movementof thenozzle 19 will be permitted notwithstanding the engage ment ofthe-ratchet dog with the teeth of the ratchet wheel and with the magnetenergized; by reason of. the frictional engagement of the ratchet wheelwith the shaft 31 as before described, the shaft turning within theratchet wheel as the former is rocked when the nozzle 19* is swung outof action.

The inner active position of the nozzle 19 is determined by stop 301,and its outer inactive position by a stop 302, which stops are fixed toan arm 45 depending from the frame 33; and the nozzle is held yieldinglyin its inactive position to prevent its accidental displacement fromvibrations of the machine, by a spring 303 attached thereto and to theframe 33.

The operation of the improved mechanism is as follows:

With the machine operating normally, the several branch circuits will beopen at the open contactors, the valve 9 will be closed, the watersquirtnozzle 15 will be at the far side of the web, the piston 24 willbe in retracted position in its cylinder, and the water jet nozzle 19will be in its inactive position discharging into the deflecting spout22. When under these conditions, the paper web accidentally parts, sayin the drier section, the contactor at that point closing and closingthe power circuit, the solenoid controlling the valve 9'will be enerized. and the valve will be opened. This will cause an air jet from thenozzle 8 to impinge upon the soft paper web, and the latter will beruptured at the middle portion thereof'as shown in Fig. 2. Upon theopening of valve 9, air will flow by pipe 27 to air cylinder 23 and thepiston therein, will be moved and will swing water jet nozzle 19inwardly from its inactive position to its active position, therebycausing its water jet to impinge on the paper web near the front edge ofthe latter and starting the formation 'of a lead strip. Due to theforward travel of the web, the break started by the rupturing air jetwill develop on an oblique line which will be intersected by the cutdefining the lead strip, so that the web will be prevented from breakingclear through, and the lead strip will continue on intact and will passinto the presses, but the remaining portion will pass down between thecouch roll and press felt into the save-all, as described in my patenthereinbefore referred to.

The attendant, after the rupture of the web to start the break, closes acut off valve 9 placed in the pipe supplying air to the air nozzle andair cylinder, with the result that the air jet from nozzle 8 will beshut off, and the entrapped air in the air cylinder will hold the waterjet nozzle 19 in its active position soas to maintain the action of thewater jet in continuing the formation of the lead strip. lrVhen now thebroke has been cleared away and the machine is ready to resumeoperations, the lead strip which has in the meantime been passingthrough the presses and to waste at the point where the accidental breakin the web occured, is tendered by the attendant to continue its coursethrough the machine,and when the feed of the lead strip has been fullyestablished, the attendant draws the water squirt nozzle 15 toward thefront of the machine, which action will swing the water jet nozzle 19 toits inactive position and thereby stop the formation of the lead strip,and the water squirt will strike the cut in the paper web defining thelead strip, whereupon the water squirt nozzle is pushed back across theweb to its former position, thereby cutting the web transversely andwidening out the leadstrip to the full width of the web. The web willnow be carried forward by the feed of the lead strip, and the feed ofthe web through the machine will be reestablished and the normaloperationof the machine will be resumed' The passage through the machineof the web will open the conductors, which will open the power circuit,and the attendant will then reset the automatically operating mechanismA so that it will be ready to function in the event of another breakageof the web.

In the foregoing description and accompanying drawings I have set forthmy invention in the particular detailed form and construction of theparts which I prefer to adopt. It will be manifest, however, that thesedetails may be variously changed withoutdeparting from the spirit of theinvention; and it will be understood that 'the invention is not limitedto any particular form or construction of the parts except in so far assuch limita- 1. In a paper making machine, the combination of means forinterrupting the feed of the paper web at one point in the machine 7 Ionand adapted to be brought into action automatically by an abnormalcondition of the paper web at a point in the machine beyond, and webincising means for forming and maintaining a lead strip on the web atthe point of interruption of the feed, said last mentioned means beingcontrolled in its action automatically by the feed interrupting means.

2. In a paper making machine, the combination of means adapted to bebrought into action by an abnormal condition of the paper webat onepoint in the machine for starting a break of the web at a precedingpoint in the machine, and means controlled in its action automaticallyby the break-starting means for cutting the web longitudinally; wherebythe web will be prevented from breaking clear through, and a lead stripwill be formed which will feed forwardly in the machine.

3'. In a paper making machine, the combination of means brought intoaction'by an abnormal condition of the paper web at one point in themachine for rupturing the web at a preceding point in the machine, andweb incising means controlled in its action automatically by therupturing means for forming a lead strip on the paper web; whereby therupture will be prevented from developing clear across the web, and thelead strip will feed forwardly in the machine.

4. In a paper making machine, the combination of fluid jet meansoperable automatically to rupture the paper .web at a given point in themachine upon the accidental breakage of the web at a point beyond, andmeans controlled in its action by said fluid jet means for cutting theweb longitudinally at a point adjacent the rupturing action; whereby alead strip will be formed on the web which will feed forwardly in themachine beyond the rupture point.

5. In a paper making machine, the combi nation of fluid jet .meansoperable automatically to rupture the paper web at a given point in themachine upon the accidental breakage of the web at a point beyond, and asecond fluid jet controlled automatically in its action by the rupturingjet and acting to incise the web longitudinally at a'point preceding therupture, to form a lead strip on the web.

6. In a paper making machine, the combination of means adapted to bebrought into action by an abnormal condition of the paper web at onepoint in the machine for starting a break of the web at a precedingpoint, means operated automatically by the break starting means forcutting the web longitudinally to form a lead strip, and means forwidening said lead strip to the full width of the web.

7. In a paper making machine, the combination of means adapted to bebrought into action by an abnormal condition of the paper web at onepoint in the machine for starting a break of the web at a precedinpoint, means operated automatically by the reak starting means forcutting the web longitudinally to form a lead strip thereon, and meansfor cutting the web transversely from the lead strip to widen the latterto the full width of the web, said transversely acting cutting meansbeing adapted when positioned for action, to render the lead stripcutter inactive.

8. In apaper making machine, the combination of a fluid jet meansadapted to be automatically operated to direct its jet onto the paperweb to rupture the same upon themcidental breakage of the web at a pointbeyond, a second fluid jet means movable to an active position to directits jet onto the paper web to form a lead strip thereon, and meansoperated by the fluid supply of the first mentioned jet, for moving saidsecond jet to active position.

9. In a paper making machine, the combination of fluid jet means adaptedto be operated automatically to rupture the paper web upon theaccidental breakage of the web at a point beyond, a second fluid jetmeans movable from an inactive position to an active position to form alead str1p on the paper web, and a third jet means operable on the paperweb to widen said lead strip to the full width of the web, said thirdjet means acting when positioned for operation, to automatically movethe second jet means to inactive position.

10. In a paper making machine the combination of means for rupturing thepaper web and adapted to be automatically brought into action by anabnormal condition of the web at a point in the machine beyond therupturing point, a fluid jet nozzle located in the machine at a pointadjacent the rupturing point and movable from an outer positiondirecting its jet beyond the edge of the web, to an inner position todirect its jet onto the web to form a lead strip thereon, and meansoperated automatically by the web rupturing means to move said jetnozzle to its inner active position.

11. In a paper making machine, the combination of a fluid jet nozzle inposition to direct its jet onto the paper web, a normally closedvalvecontrolling the supply of fluid to said nozzle, means operating onthe accidental break of the web to open said valve, a second jet nozzleadapted to be positioned to direct its jet onto the web at a pointadjacent the impingement of the first mentioned jet to form a lead stripon the web, and means operating on the opening of the valve, to positionsaid jet for action on the web.

In testimony whereof, I have aflixed my signature hereto.

FRANK A. PESOHL.

